In 2007, brothers Hank and John Green lived thousands of miles apart, so they started posting video blogs to each other on a strange new platform called YouTube. People began tuning in, and the daily Vlogbrothers posts became an early viral hit. Over time, the brothers grew that single channel into a sprawling collection of businesses, including a production studio—Complexly—that makes some of the most entertaining educational content on the internet. They’re also both hugely successful authors; John’s young adult novel The Fault in Our Stars is one of the best-selling books of all time. With every success, Hank says he’s asked himself, “What’s exciting? What’s causing you the most stress? Head in that direction.” Learn more about your ad choices. Visit podcastchoices.com/adchoices